LRP1B and neoplasm: Small intestine: Although there is no information on the Lrp1b (low-density lipoprotein receptor-related protein 1B) gene (http://www.ncbi.nlm.nih.gov/gene/311926) in relation to the intestines, a recent report indicated that LRP1B protein may function as a tumor suppressor against renal cell cancer (RCC) and is possibly be involved in the regulation of cell motility and actin cytoskeleton reorganization in RCC [81].